Parker GSC-4 Compression Tube Union 1/4 in Pfa Ptfe

Product Description

The PARKER GSC-4 is a compression-style tube union designed to join two lengths of tubing with a 1/4-inch outside diameter in a single, inline connection. Constructed from Perfluoroalkoxy (PFA) and Polytetrafluoroethylene (PTFE) plastics, this fitting delivers excellent chemical resistance and is well suited for fluid-handling systems that run corrosive, high-purity, or aggressive media. The plastic grip-style compression mechanism allows for secure, leak-resistant tube retention without the need for brazing or soldering. This union is installed by plumbers, process piping technicians, and industrial maintenance professionals working on tubing runs in chemical, laboratory, semiconductor, and specialty fluid distribution applications.

This compression tube union is applicable in systems requiring a straight inline union for 1/4-inch OD tubing. Its PFA and PTFE construction makes it a practical choice in high-purity or chemically aggressive environments such as laboratory plumbing, chemical feed lines, and process fluid distribution. It is a single-piece fitting packaged individually and is appropriate for both new installation and repair of existing tubing systems where metal fittings are unsuitable due to chemical compatibility concerns.

Key Features

• Accepts 1/4-inch outside diameter tubing on both ends for a straight inline union connection
• PFA and PTFE construction provides broad chemical resistance for corrosive and high-purity media
• Plastic compression grip design requires no soldering, brazing, or special tools for assembly
• Lightweight fitting at 0.1 pounds for use in compact or weight-sensitive installations
• Single-piece package quantity suitable for spot repairs or small-scale installations

Compatibility

Designed as an OEM-style compression tube union for systems using 1/4-inch OD tubing where PFA or PTFE fittings are required for chemical compatibility.

Installation Notes

Installation is typically performed by a licensed plumber or process piping technician. Before servicing any fluid line, shut off flow and depressurize the system completely. Cut tubing squarely and deburr the end before inserting into the compression fitting to ensure a proper seal. Verify that the tubing material and system media are compatible with PFA and PTFE before installation.